Kubota G2000 4WS User Manual

S.l ENGINE
G 1700·G1800·G 1900G2000 WSM. 10830
SERVICING
(1) Cylinder Head and Valves
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0109F097
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(1) (2) (3)
(1) Red Permeative liquid
(3)
White Developer
(2) Detergent
0109F070
Cylinder Head Surface Flatness
1. Thoroughly clean the cylinder head surface.
2. Place a straightedge on the cylinder head's four sides and
two diagonal as shown in the figure.
3. Measure the clearance with a feeler gauge.
4. If the measurement exceeds the allowable limit, correct it
with a surface grinder .
• IMPORTANT
• Be sure to check the valve recessing after correcting.
Cylinder head surface
0.05 mm
Allowable limit
flatness
00020m
I I
Fmishing
81lR max
'IV
Cylinder Head Flaw
1. Prepare an air spray red check (Code No. 07909-31371).
2. Clean the surface of the cylinder head with detergent (2).
3. Spray the cylinder head surface with the red permeative
liquid (1).
Leave
it five to ten minutes after spraying.
4. Wash away the red permeative liquid on the cylinder head
surface
with the detergent (2) .
5. Spray the cylinder head surface with white developer (3).
If flawed, it can be identified as red marks.
Valve Recessing
1. Clean the cylinder head, the valve face and valve seat.
2. Insert the valve into the valve guide.
3. Measure the valve recessing with a depth gauge,
4. If the measurement exceeds the allowable limit, replace the
valve.
5. If it still exceeds the allowable limit after replacing the valve,
correct
the valve seat face of the cylinder head with a valve
seat
cutter (Code No. 07909-33102) or valve seat grinder.
Then,
correct the cylinder head surface with a surface
grinder, or replace the cylinder head.
Valve recessing
(Intake and exhaust)
Factory spec.
0.75
to 0.95 mm
0.0295 toO.0374 in.
AllowablE'
limit
1.2mm
0047 in.
5.1-68
216

Kubota G2000 4WS Specifications

General

Brand	Kubota
Model	G2000 4WS
Category	Tractor
Language	English